Incorporation, in U.S. law, is the process by which American courts have applied portions of the U.S. Bill of Rights to the states. Prior to 1925, the Bill of Rights was held only to apply to the federal government. Under the incorporation doctrine, most provisions of the Bill of Rights now also apply to the state and local governments.

Prior to the ratification of the Fourteenth Amendment and the development of the incorporation doctrine, the Supreme Court in 1833 held in Barron v. Baltimore that the Bill of Rights applied only to the federal, but not any state governments. Even years after the ratification of the Fourteenth Amendment, the Supreme Court in United States v. Cruikshank (1876) still held that the First and Second Amendment did not apply to state governments. However, beginning in the 1920s, a series of United States Supreme Court decisions interpreted the Fourteenth Amendment to "incorporate" most portions of the Bill of Rights, making these portions, for the first time, enforceable against the state governments.

The doctrine of incorporation has been traced back to either Chicago, Burlington and Quincy Railroad v. City of Chicago (1897) in which the Supreme Court appeared to require some form of just compensation for property appropriated by state or local authorities (although there was a state statute on the books that provided the same guarantee) or, more commonly, to Gitlow v. New York (1925), in which the Court expressly held that States were bound to protect freedom of speech. Since that time, the Court has steadily incorporated most of the significant provisions of the Bill of Rights.[1]

Provisions that the Supreme Court either has refused to incorporate, or whose possible incorporation has not yet been addressed include the Fifth Amendment right to an indictment by a grand jury, and the Seventh Amendment right to a jury trial in civil lawsuits.

Incorporation applies both procedurally and substantively to the guarantees of the states. Thus, procedurally, only a jury can convict a defendant of a serious crime, since the Sixth Amendment jury-trial right has been incorporated against the states; substantively, for example, states must recognize the First Amendment prohibition against a state-established religion, regardless of whether state laws and constitutions offer such a prohibition. The Supreme Court has declined, however, to apply new procedural constitutional rights retroactively against the states in criminal cases (Teague v. Lane, 489U.S.288 (1989)) with limited exceptions, and it has waived constitutional requirements if the states can prove that a constitutional violation was "harmless beyond a reasonable doubt."[citation needed]

Rep. John Bingham, the principal framer of the Fourteenth Amendment, advocated that the Fourteenth applied the first eight Amendments of the Bill of Rights to the States.[2] The U.S. Supreme Court subsequently declined to interpret it that way, despite the dissenting argument in the 1947 case of Adamson v. California by Supreme Court Justice Hugo Black that the framers' intent should control the Court's interpretation of the Fourteenth Amendment (he included a lengthy appendix that quoted extensively from Bingham's congressional testimony).[3] Although the Adamson Court declined to adopt Black's interpretation, the Court during the following twenty-five years employed a doctrine of selective incorporation that succeeded in extending to the States almost all of the protections in the Bill of Rights, as well as other, unenumerated rights. The 14th Amendment has vastly expanded civil rights protections and is cited in more litigation than any other amendment to the U.S. Constitution.[4]

In the 1940s and 1960s the Supreme Court gradually issued a series of decisions incorporating several of the specific rights from the Bill of Rights, so as to be binding upon the States.[5] A dissenting school of thought championed by JusticeHugo Black supported that incorporation of specific rights, but urged incorporation of all specific rights instead of just some of them. Black was for so-called mechanical incorporation, or total incorporation, of Amendments 1 through 8 of the Bill of Rights (Amendments 9 and 10 being patently connected to the powers of the federal government alone).[6] Black felt that the Fourteenth Amendment required the States to respect all of the enumerated rights set forth in the first eight amendments, but he did not wish to see the doctrine expanded to include other, unenumerated "fundamental rights" that might be based on the Ninth Amendment. Black felt that his formulation eliminated any arbitrariness or caprice in deciding what the Fourteenth Amendment ought to protect, by sticking to words already found in the Constitution. Although Black was willing to invalidate federal statutes on federalism grounds, he was not inclined to read any of the first eight amendments as states' rights provisions as opposed to individual rights provisions.[6] Justice Black felt that the Fourteenth Amendment was designed to apply the first eight amendments from the Bill of Rights to the states, as he expressed in his dissenting opinion in Adamson v. California.[7] This view was again expressed by Black in his concurrence in Duncan v. Louisiana citing the Fourteenth Amendment's Privileges or Immunities Clause: "'No state shall make or enforce any law which shall abridge the privileges or immunities of citizens of the United States' seem to me an eminently reasonable way of expressing the idea that henceforth the Bill of Rights shall apply to the States."[8]

Justice Felix Frankfurter, however, felt that the incorporation process ought to be incremental, and that the federal courts should only apply those sections of the Bill of Rights whose abridgment would "shock the conscience," as he put it in Rochin v. California (1952). Such a selective incorporation approach followed that of Justice Moody, who wrote in Twining v. New Jersey (1908) that "It is possible that some of the personal rights safeguarded by the first eight Amendments against National action may also be safeguarded against state action, because a denial of them would be a denial of due process of law. If this is so, it is not because those rights are enumerated in the first eight Amendments, but because they are of such a nature that they are included in the conception of due process of law." The due process approach thus considers a right to be incorporated not because it was listed in the Bill of Rights, but only because it is required by the definition of due process, which may change over time. For example, Moody's decision in Twining stated that the 5th Amendment right against self-incrimination was not inherent in a conception of due process and so did not apply to states, but was overruled in Malloy v. Hogan (1964). Similarly, Justice Cardozo stated in Palko v. Connecticut (1937) that the right against double jeopardy was not inherent to due process and so does not apply to the states, but that was overruled in Benton v. Maryland (1969). Frankfurter's incrementalist approach did carry the day, but the end result is very nearly what Justice Black advocated, with the exceptions noted below.

Some have suggested that the privileges or immunities clause would be a more appropriate textual basis than the due process clause for incorporation of the Bill of Rights.[9] It is often said that the Slaughter-House Cases "gutted the privileges or immunities clause" and thus prevented its use for applying the Bill of Rights against the states.[10] In his dissent to Adamson v. California, however, Justice Hugo Black pointed out that the Slaughter-House Cases did not directly involve any right enumerated in the Constitution:

[T]he state law under consideration in the Slaughter-House cases was only challenged as one which authorized a monopoly, and the brief for the challenger properly conceded that there was "no direct constitutional provision against a monopoly." The argument did not invoke any specific provision of the Bill of Rights, but urged that the state monopoly statute violated "the natural right of a person" to do business and engage in his trade or vocation.[11]

Thus, in Black's view, the Slaughterhouse Cases should not impede incorporation of the Bill of Rights against the states, via the Privileges or Immunities Clause. Some scholars go even further, and argue that the Slaughterhouse Cases affirmatively supported incorporation of the Bill of Rights against the states.[12] In dicta, Justice Miller's opinion in Slaughterhouse went so far as to acknowledge that the "right to peaceably assemble and petition for redress of grievances ... are rights of the citizen guaranteed by the Federal Constitution," although in context Miller may have only been referring to assemblies for petitioning the federal government.[13]

In the 2010 landmark case McDonald v. Chicago, the Supreme Court declared the Second Amendment is incorporated through the Due Process Clause. However, Justice Thomas, the fifth justice in the majority, criticized substantive due process and declared instead that he reached the same incorporation only through the Privileges or Immunities Clause. No other justice attempted to question his rationale. This is considered by some as a "revival" of the Privileges or Immunities Clause,[14] however as it is a concurring opinion and not the majority opinion in the case, it holds no legal weight in lower courts; it is merely an indication that SCOTUS may be inclined, given the proper question, to reconsider and ultimately reverse the Slaughterhouse Cases.

Many of the provisions of the First Amendment were applied to the States in the 1930s and 1940s, but most of the procedural protections provided to criminal defendants were not enforced against the States until the Warren Court of the 1960s, famous for its concern for the rights of those accused of crimes, brought state standards in line with federal requirements. The following list enumerates, by amendment and individual clause, the Supreme Court cases that have incorporated the rights contained in the Bill of Rights. (The Ninth Amendment is not listed; its wording indicates that it "is not a source of rights as such; it is simply a rule about how to read the Constitution."[15] The Tenth Amendment is also not listed; by its wording, it is a reservation of powers to the states and to the people.)

This right, though not in the words of the first amendment, was first mentioned in the case NAACP v. Alabama, 357U.S.449 (1958)[19] and was at that time applied to the states. See also Roberts v. United States Jaycees, 468U.S.609 (1984), where the U.S. Supreme Court held that "implicit in the right to engage in activities protected by the First Amendment" is "a corresponding right to associate with others in pursuit of a wide variety of political, social, economic, educational, religious, and cultural ends."

This right has been incorporated against the states. Described as a fundamental and individual right that will necessarily be subject to strict scrutiny by the courts, see McDonald v. City of Chicago (2010). Self Defense is described as "the central component" of the Second Amendment in McDonald, supra., and upheld District of Columbia v. Heller 554 U.S (2008) concluding the Fourteenth Amendment incorporates the Second Amendment right, recognized in Heller, to keep and bear arms for the purpose of self-defense. The 14th Amendment makes the 2nd Amendment right to keep and bear arms fully applicable to the States, see, McDonald vs. City of Chicago (2010). "The right to keep and bear arms must be regarded as a substantive guarantee, not a prohibition that could be ignored as long as the States legislated in an evenhanded manner," McDonald, supra..

The Tenth Circuit has suggested that the right is incorporated because the Bill of Rights explicitly codifies the "fee ownership system developed in English law" through the Third, Fourth, and Fifth Amendments, and the Fourteenth Amendment likewise forbids the states from depriving citizens of their property without due process of law. See United States v. Nichols, 841 F.2d 1485, 1510 n.1 (10th Cir. 1988).

The "problem" is that the third amendment, by and large, is the only one that is almost never violated by the states and Federal government, almost nobody is suing over the issue, so very few cases are being heard. The U.S. Supreme Court has never had a third amendment case appealed to it.

The remedy of exclusion of unlawfully seized evidence, the exclusionary rule, has been incorporated against the states. See Mapp v. Ohio. In Mapp, the Court overruled Wolf v. Colorado in which the Court had ruled that the exclusionary rule did not apply to the states.

A note about the Miranda warnings: The text of the Fifth Amendment does not require that the police, before interrogating a suspect whom they have in custody, give him or her the now-famous Miranda warnings. Nevertheless, the Court has held that these warnings are a necessary prophylactic device, and thus required by the Fifth Amendment by police who interrogate any criminal suspect in custody, regardless of whether he or she is ultimately prosecuted in state or federal court.

This right has been incorporated against the states. See Duncan v. Louisiana, 391U.S.145 (1968), which guarantees the right to a jury trial in non-petty cases.[22]See also Parker v. Gladden, 385U.S.363 (1966), where the Supreme Court ruled "that the statements of the bailiff to the jurors are controlled by the command of the Sixth Amendment, made applicable to the States through the Due Process Clause of the Fourteenth Amendment. It guarantees that 'the accused shall enjoy the right to a * * * trial, by an impartial jury * * * [...].'"[22] However, the size of the jury, as well as the requirement that it unanimously reach its verdict, vary between federal and state courts. Even so, the Supreme Court has ruled that a jury in a criminal case may have as few as six members. Williams v. Florida, 399U.S.78 (1970). If there are twelve, only nine jurors need agree on a verdict. Furthermore, there is no right to a jury trial in juvenile delinquency proceedings held in state court. See McKeiver v. Pennsylvania, 403U.S.528 (1971).

This right may have been incorporated against the states. In Schilb v. Kuebel, 404 U.S. 357 (1971), the Court stated in dicta: "Bail, of course, is basic to our system of law, and the Eighth Amendment's proscription of excessive bail has been assumed to have application to the States through the Fourteenth Amendment." In Murphy v. Hunt, 455U.S.478 (1982), the Court did not reach the issue because the case was dismissed as moot. Bail was included in the list of incorporated rights in McDonald footnote 12, citing Schilb.

This right has been incorporated against the states. See Robinson v. California, 370U.S.660 (1962). This holding has led the Court to suggest, in dicta, that the excessive bail and excessive fines protections have also been incorporated. See Baze v. Rees, 128 S. Ct. 1520, 1529 (2008).

A similar legal doctrine to incorporation is that of reverse incorporation. Whereas incorporation applies the Bill of Rights to the states through the Due Process Clause of the Fourteenth Amendment, in reverse incorporation, the Equal Protection Clause of the Fourteenth Amendment has been held to apply to the federal government through the Due Process Clause located in the Fifth Amendment.[24] For example, in Bolling v. Sharpe, 347U.S.497 (1954), which was a companion case to Brown v. Board of Education, the schools of the District of Columbia were desegregated even though Washington is federal. Likewise, in Adarand Constructors, Inc. v. Peña515U.S.200 (1995), an affirmative action program by the federal government was subjected to strict scrutiny based on equal protection.

J. Lieberman (1999). A Practical Companion to the Constitution. Berkeley: University of California Press.

Regina McClendon, Public Law Research Institute (1994) (stating that "[t]he almost total incorporation of the Bill of Rights lends support to the theory that incorporation of the Second Amendment is inevitable")."Limits On The Power Of States To Regulate Firearms". W3.uchastings.edu. Retrieved 2008-09-06.